Balance is perhaps what matters most. That we acknowledge all aspects of our feelings — good, bad, sad, glad, angry, euphoric.

Somewhere along the way, it seems that Humans lost their way. There are sayings such as "Misery loves company" and so forth, but where are the positive versions of these? Perhaps the positivity movement merely started as a counterpoint to the tendency to see "the little black cloud" in an otherwise cloudless sky?

As you suggest, excess focus on the positive does us no favors. But perhaps a broader truth is that any lack of balance — that is, taking any extreme excessively to heart — isn't particularly good for one's mental health and general feeling of well-being in life.

Judgment can be a slippery slope. I believe Humanity is already experiencing that, in ways we don't think about. "Negative" or "sad" feelings are increasingly scorned upon — and increasingly classified as "conditions" for which treatment is needed. It is an unfortunate process of "medicalizing" emotions that previously were considered simply a normal part of the spectrum of human experience. Once upon a time, someone might have been described as having a "melancholic temperament;" and they would go off and write maudlin poetry for six months. Now, they are told they are "mentally ill" and forced to take various pharmaceuticals, as a result of which their creativity is lost in a cloud of altered chemistry.

And that's a great shame. But what do I know? I'm just a little black cat!

=^..^=